不需要出去正儿八经地锻炼，起身走走，骑半个小时的自行车，或者报个瑜伽课，都行。

You don't need to go all-out -- go for a walk, take a 30-minute bike ride, or sign up for a yoga class.

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作者以《道藏》本及《四库全书》本中的《灵棋经》为基本文献，考察“灵棋课法”的由来与归属。

Taking advantage of Ling Qi Jing in Dao Zang and Si Ku Quan Shu, the author studied the origin and its ideology.

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